Added 2016-2017 rover code, and a ROB assignment

OSU Robotics Club/Mars Rover 2016-2017/ground_station/Interface/LiveLogs/LiveLogsCore.py

@@ -0,0 +1,95 @@
+"""
+    This file contains the live logs page sub-class
+"""
+
+#####################################
+# Imports
+#####################################
+# Python native imports
+from PyQt5 import QtCore, QtWidgets, QtGui
+import logging
+
+
+#####################################
+# Live Logs Class Definition
+#####################################
+class LiveLogs(QtCore.QThread):
+
+    text_ready_signal = QtCore.pyqtSignal(str)
+
+    send_packet = QtCore.pyqtSignal(list)
+
+    def __init__(self, main_window):
+        super(LiveLogs, self).__init__()
+
+        # ########## Reference to top level window ##########
+        self.main_window = main_window  # type: QtWidgets.QMainWindow
+
+        # ########## Get the settings instance ##########
+        self.settings = QtCore.QSettings()
+
+        # ########## Get the Pick And Plate instance of the logger ##########
+        self.logger = logging.getLogger("RoverBaseStation")
+
+        # ########## Thread Flags ##########
+        self.run_thread_flag = True
+        self.open_log_file_flag = True
+        self.show_log_file_flag = True
+
+        # ########## References to GUI Elements ##########
+        self.live_log_tb = self.main_window.live_log_text_browser  # type: QtWidgets.QTextBrowser
+
+        # ########## Class Variables ##########
+        self.log_file_path = None
+        self.log_file_reader = None
+        self.log_file_prev_mtime = 0
+
+    def run(self):
+        self.logger.debug("Live Logs Thread Starting...")
+
+        while self.run_thread_flag:
+            if self.open_log_file_flag:
+                self.__open_log_file()
+                self.open_log_file_flag = False
+            elif self.show_log_file_flag:
+                self.__show_updated_log_file()
+                self.msleep(250)
+
+        self.logger.debug("Live Logs Thread Stopping...")
+
+    # noinspection PyUnresolvedReferences
+    def connect_signals_to_slots__slot(self):
+        self.text_ready_signal.connect(self.live_log_tb.setText)
+        self.live_log_tb.textChanged.connect(self.__on_move_cursor_needed__slot)
+
+        self.main_window.kill_threads_signal.connect(self.on_kill_threads__slot)
+
+    def __open_log_file(self):
+        # Get the log file path
+        appdata_base_directory = self.settings.value("appdata_directory", type=str)
+        log_directory = appdata_base_directory + "/logs"
+        self.log_file_path = log_directory + "/log.txt"
+
+        # Open the class' reader for the file
+        self.log_file_reader = open(self.log_file_path, 'r')
+
+    def __show_updated_log_file(self):
+        log_browser_string = ""
+
+        # Seek back to the beginning of the file and read in the lines
+        self.log_file_reader.seek(0)
+        log_lines = self.log_file_reader.readlines()
+
+        # Go through line by line and only add lines that are selected to be shown via the checkboxes
+        for line in log_lines:
+                log_browser_string += line
+
+        # Display the text
+        self.text_ready_signal.emit(log_browser_string)
+
+    def __on_move_cursor_needed__slot(self):
+        # Move the cursor to the end when the text browser text updates. This essentially scrolls constantly.
+        self.live_log_tb.moveCursor(QtGui.QTextCursor.End)
+
+    def on_kill_threads__slot(self):
+        self.run_thread_flag = False